diff --git a/minetest.conf b/minetest.conf
index 36e6944..c9e4fef 100644
--- a/minetest.conf
+++ b/minetest.conf
@@ -1,3 +1,9 @@
+#Player physics
 movement_liquid_sink = 25
 movement_liquid_fluidity = 0.8
 movement_liquid_fluidity_smooth = 2
+
+#Mapgen v6
+mgv6_np_biome = 0.2, 0.8, (680, 680, 680), 9130, 3, 0.50, 2.0
+mgv6_np_humidity = 0.2, 0.8, (650, 650, 650), 72384, 3, 0.50, 2.0
+mgv6_np_steepness = 0.5, 0.5, (250, 250, 250), -932, 5, 0.7, 2.0
diff --git a/mods/default/mapgenv6.lua b/mods/default/mapgenv6.lua
index df89a64..5bb76a6 100644
--- a/mods/default/mapgenv6.lua
+++ b/mods/default/mapgenv6.lua
@@ -85,6 +85,7 @@ end
 	decoration = "default:dry_shrub",
 })
 
+-- Birch trees
 minetest.register_decoration({
 		deco_type = "schematic",
 		place_on = {"default:dirt_with_grass"},
@@ -93,7 +94,7 @@ minetest.register_decoration({
 			offset = 0,
 			scale = 0.004,
 			spread = {x = 100, y = 100, z = 100},
-			seed = 7133,
+			seed = 2339,
 			octaves = 3,
 			persist = 0.6
 		},